Please use this identifier to cite or link to this item: http://hdl.handle.net/10995/111963
Title: Nonlinear Characterization of Waveguide Index Profile: Application to Soft-Proton-Exchange in LiNbO3
Authors: Neradovskiy, M.
Tronche, H.
Chezganov, D.
Pashnina, E.
Vlasov, E.
Baldi, P.
Lunghi, T.
Shur, V.
Doutre, F.
De Micheli, M.
Issue Date: 2021
Publisher: Institute of Electrical and Electronics Engineers Inc.
Institute of Electrical and Electronics Engineers (IEEE)
Citation: Nonlinear Characterization of Waveguide Index Profile: Application to Soft-Proton-Exchange in LiNbO3 / M. Neradovskiy, H. Tronche, D. Chezganov et al. // Journal of Lightwave Technology. — 2021. — Vol. 39. — Iss. 14. — P. 4695-4699. — 9424369.
Abstract: In integrated photonics, the precise knowledge of the waveguides refractive index profile is mandatory for the modeling of photonic chips and therefore implementing innovative circuits. Usual index profile determination relies on effective index measurement of propagating modes in planar waveguides coupled with numerical fitting tools. In this paper we propose an alternative technique based on the characterization of the second harmonic generation signature of a nonlinear waveguide. We include the characterization of high-order spatial modes showing their relevance to probe both vertical and lateral distributions. We finally provide an explicit profile ready-to-use for modeling soft-proton exchanged waveguides in lithium niobate and we test its prediction capability. © 1983-2012 IEEE.
Keywords: MODE MATCHING METHOD
NONLINEAR OPTICS
OPTICAL WAVEGUIDE
REFRACTIVE INDEX
NIOBIUM COMPOUNDS
NONLINEAR OPTICS
PHOTONICS
REFRACTIVE INDEX
HIGH-ORDER SPATIAL MODES
INTEGRATED PHOTONICS
LATERAL DISTRIBUTIONS
NONLINEAR CHARACTERIZATION
NONLINEAR WAVEGUIDES
PREDICTION CAPABILITY
PROTON EXCHANGED WAVEGUIDES
REFRACTIVE INDEX PROFILES
WAVEGUIDES
URI: http://hdl.handle.net/10995/111963
Access: info:eu-repo/semantics/openAccess
SCOPUS ID: 85105863869
PURE ID: 23003431
ISSN: 0733-8724
metadata.dc.description.sponsorship: The work of e-beam writing of periodic domains on soft proton exchanged waveguides was supported by the Russian Science Foundation under Grant 19-72-00091, and performed by D.S. Chezganov, E.A. Pashnina and E.O Vlasov in Ural Federal University.
RSCF project card: 19-72-00091
Appears in Collections:Научные публикации, проиндексированные в SCOPUS и WoS CC

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